What is idfk?

The acronym "IDFK" stands for "I Don't F***ing Know." It's often used in informal or casual conversations, particularly online or in text messages, to express ignorance or uncertainty in a more emphatic or frustrated manner. Depending on the context, it might be used humorously or when someone is too exasperated to care about finding an answer to a question. As with many acronyms that include profane language, it's advisable to consider the audience and setting before using it.